Automatic boiler-cleaner



l(No Model.) 2 Sheets-Sheet 1.

' A. L. BAUHARD.

AUTOMATIG BOILER CLEANERr No. 521,874. Patented-June 26,1894.

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do Model.) 2 sheets-#sheet 2.

A. L. `BAUHARD.4 AUTOMATIC .BOILBR GLEANBR.

No. 521,874. Patented June 26, 1894.

Wiigesscs UNITED STATES' PATENT OFFICE.

`ALVIN L. BAUHARD, on BEIsToL, TENNESSEE.

, AUTOMATIC BQILER-CLEAN ER.

SPECIFICATION forming part of LettersPatent No. 521,874, dated .Tune 26,1894.

Application filed June 14,1893- `Serial No. 477,567. (No model.)

To all whom it may concern.-

.13e itknown that I, ALVIN L. BAUHARD, a citizen of the United States,residing at -Bristol, in the county of Sullivan andv State of Ten`nessee, have invented a new and useful Automatic Boiler-Cleaner, ofwhich the following is a specification.'

My invention relates to boiler-cleaning apparatus designed to receivethe foul water, scum, &c., from the upper levels in the boiler andconvey the same into a precipitator. in

which the impurities are precipitated and.

drawings, the novel features thereof being particularly pointed out inthe claims.

In the drawings: Figure l is a sectional view of a boiler andboiler-cleaning apparatus attached thereto in operative position,

the direction of circulation through the boiler and precipitator beingindicated by darts. Fig.\2 is a detail view in perspective of theaccumulatoror skimmer, which is located in the boiler at the inlet endof one of the circulating pipes. Fig. 3 is a sectional view enlarged ofthe precipitator.

Similar numerals of reference indicate corresponding parts in all thefigures of the draw- Ings.

It is well known that .the water in a boiler, as soon as it becomesheatedl to a certain temperature, circulates from the point of great,-

-est heat to that of least heat, and thus concommunicates directly withthe top of aA prelcipitator 2, which is substantially cylindrical inform, the pipe extending down thereinto below the surface of the waterand being provided With an atomizer or sprayer 3. A second circulatingpipe 4 communicates with the boiler near its bottom, and with theprecipitator at a point adjacent to the top. The pipe l is designed toconvey the rvimpure water to the precipitator, and the pipe 4 isdesigned to convey the purified water back to the boiler, as indicatedby the arrows in Fig. 1, both pipes being provided with suitable valves5.

The precipitator is provided with an inverted conical bottom 6, with theapex of which is connected a blow-off pipe 7, having a suitable valve 8,and Vconnected to theinlet end of the supply circulating pipe 1, is anaccumulator 9, consisting of a sleeve or hub l0, provided withradially-disposed wings 1l, which extend for about one-half theirlengths below the lower or inlet end of the pipe and are separated toallow a free passage through the pipe.

This being the construction of my improved boiler cleaning apparatus,the operation thereof,briefly stated, is as follows: The scum whichaccumulates at the rear end of the boiler is attracted by theaccumulator andis guided by the radially-disposed wings thereof `to theinlet end of the supply accumulating pipe, whence they pass to theprecipitator and are finely divided in escaping through the atomizer.The temperature of the contents of the precipitator being-a few degreeslower than those of the boiler, the impurities are caused to fall andsettle in the conical or funnel-shaped bottom ofA the precipitator, fromwhich they may be blown at intervals by the pressure in the boiler. Thepurified water passes from the precipitator through the return-pipe 4 tothe boiler, thus making room for the impure water lwhich is introducedthrough the pipe l. f It will be understood that this circulation of`water from the boiler through theprecipitat-or and back to the boiler iscontinuous, and the temperature of the water is but slightly reduced inits passage.

'Ihe construction of the apparatus as described is simple and effective,and may be inexpensively manufactured. The precipil vtator is provided,near its base, with a lateral IOO 1. In a boiler-cleaning apparatus, thecomr bination with a precipitator, a pipe leading thereto from theboiler, and a pipe leading therefrom to the boiler, of an accumulatorattached to the inlet end of the pipe leading to the precipitator andcomprising a sleeve 10 fitted snugly upon the end of said. pipe, andradially-disposed Wings ll secured at their inner edges to the sleevedepending be` low the plane of the inlet end of the same and separatedat their adjacent edges below said inlet end to form a passage,substantiallyY as specified.

2. In a boiler-cleaning apparatus, the com bination with a precipitatingchamber, a pipe leading thereto from the boiler, and a pipe leadingtherefrom to the boiler, said chamber f having a funnel-shaped orconical bottom with a blow-oit pipe connected to its apex, of anaccumulatorattached to the inlet end of the pipe leading to theprecipitator and having radially-disposed wings to guide the iloatingimpurities to the said inlet end, andan atomizer connected to thedischarge end of the same pipe to which the accumulator is connected,said atomizer consisting essentially of a perforated receptacle orbasket 3, having no outlet except through its perforations, whereby thecontents of the pipe are lfinely divided as they are discharged into theprecipitator, substantially as specified.

In testimony that I `claim the foregoing as my own I have hereto afxedmy signature in the presence of two Witnesses.

ALVIN L. BAUI'IARD.

Witnesses:

W. D. KENNEDY, J. A. DANIEL.

